BDMV is the full disc backup (20–30 GB per episode in season box set). For single episodes, most users prefer Remux (extracted .m2ts + audio/subtitles) or re-encoded MKV (x264/x265).

If you are trying to watch this specific "BDMV" file, keep in mind: Young Sheldon Season 2 Episode 5 Review

BDMV/ ├── index.bdmv ├── MovieObject.bdmv ├── PLAYLIST/ (00000.mpls, etc.) ├── CLIPINF/ (00000.clpi, etc.) ├── STREAM/ (00000.m2ts — main feature) ├── BACKUP/ ├── AUXDATA/ └── BDJO/

If you are watching this episode as part of a binge-watch or technical archive, here is how it fits into the season arc:

Because it is a folder structure, you cannot simply double-click a file to play it easily. You have three main options: